Gems are a resource in Imperialism and Imperialism 2, one of the few that cannot be bought or sold by way of trade.
- The specific article has not been created for (or "Gems" is not part of) Imperialism
Produced on a mountain, gems yield $500 per turn once a mine has been developed for them. Further development doubles that (and costs only $1000: extremely good value!).
- Gems is not present in (or the article has not been created for) Imperialism 2